Process of preserving food products.



A11.709,432. Patented sept. I6, |902.

i w. u. BAKER: PRUCESS 0F PRESERVING F000 PRODUCTS.

v (Appliation led Apr. 16, 1901.) (N o .M od el.)

e e UNITED STATES ATENT man.

WILLARD D. BAKER, `OF ROGERS, ARKANSAS, ASSIGNOR TOE. B. HRRING-` `TON, TRUSTEILVOFKANSAS CITY, MISSOURI,

`"Kantoor-:ss oEPRsERvlNG FooD PRODUCTS.

`PEGIlICATION formngpart of Letters Patent No. 709,432, dated September 16, 1902.

`lipplianmifneiiiprii16, i901. serai No. 56,107. (No Spaniens.)

g To all `r11/baffi, itl may concern:

Be it known that I, WILLARD-DQBAKER, w facitizen of the United States,'resi`ding at f Rogers, inthe county of Benton andState of i y 5 Arkansas, have invented .a new and useful a Process of PreservingV Food Products, of

` `which the following is a specification. i

i `This invention relates to the preservation f i offood products. i n j T- v 1o i The object of the invention is in a simple, y feasible, and at once practical manner and kwithout the employment of a refrigerant to `effect `prolonged preservation of food matefrials. T5 ,i With these and otherobjectsin view, as `will a. appear as the nature of the invention is betater understood, the same consists in the novel a process of `preserving or treating fruit and other food products,`as `will be hereinafter `ze `fully described andclaimed. y 1

Q In the accompanying drawing, forming a `partfofthis specicatiomand in which like parts, there is illustrated somewhat inthe l 25 `nature of a diagram a chamber or space prof vided withmeans for eifecting preservation 7 x of food materials, and in the drawing the fig-` t `ure is aview 4in sectional elevation of a chainber and adjunctive mechanism` associated `therewith ffor carrying out `the processhere-g Tinafter described.`

lReferring to the drawingpdesignatesa i chamber constructed inl such `manner and of such material as to render it practically heat andfrost proof and which may consist of an i inner and an outer casing having an intervening filling offcharcoal or other suitable lag;`

A ging material and provided at its top with a i ventilator `6, provided `with a closure 7. In theupper portionoiithe chamber is arranged a transversezshelf 8onwhich` are disposed i pans 9 and 10, the `pan l0` beingdisposed below the ventilator and thepan 9 belowthe discharge end-of the iuletpipe ll, which enters throughthe topof` the chamber'and comi municatesat its lower end with the combusa tion-chamber in the form of a metallic box l2, provided witha grate` 13, below which isar-` ranged a draft-opening providedwith a suit- `able closure 14; Tliepipe `ll includes a fanchamber 15, in which is arranged a fan 16,

numerals offreferenceindicate corresponding `normally contained therein has been` driven adapted upon rotation to create adraft upward through the pipe lland into the cham ber 5.

Upon the grate in the combustion-chamber are placed any desired number of sheets 17 of blotting-paper or other absorbent material composed of wood fiber which has been saturated with a solution of equal parts, by` Weight, of potassium nitrate and boiling water, the material being dried by slow evapo-` ration. 1

The pan 9 is to contain potassium carbonate andthe pan 10 charcoal. In determining the quantity of the above materials to be used 'the cubic capacity of the chamber will be ascertained, and assuming it tobe eighteen` hundred cubic feetthe quantity of potassium carbonate employed will be twentytive pounds and of the charcoal four bushels, this latter having been previously dried by being subject-ed to a heat of about 180 Fah- `other` products to be treated `having, beeno `placedyin thechamber the cover isremoved from thejvesselcoutaining the charcoal andthe door of the chamber is tightly closed, the

`ventilator being left open. The blotting-paper, which will form a percentage'of creosote on burning, is then ignited and is permitted to smolder, but not to blaze,and, if neccessary, the fan is operated to carry the products of combustion into the chamber until the air out, after which the ventilator is closed, the air dissipated being thus replaced by gases evolved from the burning paper, and consisti y ing of nitrogen, carbonic-acid gas, a percentf age of creosote, and possibly a percentage of fresh oxygen produced from the potassium nitrate. `Potassium carbonate being hygro` scopic in character readily absorbs all of the `moisture contained in thegases, While the charcoal takes up all ill-smelling gases.

Fruits treated by this process are capable of being exposed for lengthy periods of time IOO rSerial No. 56,106 being embodied in my tothe atmosphere without appreciable deterioration and readily withstand the tendency to rapid decay attendant upon transportation-` The claims herein are specific to the process set forth,'broad claims on the method com potassium nitrate.

2. The process of preserving food products which consists in subjecting them to the prod-` ucls of combustion of paper impregnated with potassium nitrate,in the presence of an absorbent for gases and an absorbent for moisture. p 3. The process or" preserving food products which consists in confining them in a chamber charged with the fumes of burning paper having potassium` nitrate associated therewith, i'n the presence ofpotassium carbonate to absorb the moisture of the atmosphere of the chamber, and of charcoal to take up illsmelling gases. l p

4. The process of preserving food products which consists in confining Ithemy in an atmosphere charged with carbonio-acid gas, a percentage of theprinciples of creosote and of `fresh oxygen, produced by the combustion of paper impregnated withpotassium nitrate, in the presence of, an absorbent for moisture.

5. The process of preserving food products which consists in confining them in an atmosphere charged with carbonio-acid gas, nitrogen, a percentage' of the principles of creosote and of fresh oxygen produced by the combustion of paper impregnated with potassium nitrate.

6. The process of preserving food products which consists in confining them in an atthe presence of an absorbent for ill-smelling gases. l Y

8.v The process of preserving food products which consists in conining them in an atmosphere charged with carbonio-acid gas, nitrogen, a percentage of the principles of creosote' and a percentage of fresh oxygen,

produced by the combustion of paper impregnated with potassium nitrate, in the presence of an absorbent for moisture and an absorbent for Vill-smelling gases.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

WILLARD D. BAKER.

Witnesses: Q

. ANDREW E. C RAvER,

DAVID C. LANE. 

